James bodie



(No Model.)

-4J. ROME. 'A STEAM BOILBR. l No.302,039.1 Patented Juby 1884.

H i G A y: J C 1 fiel K 56.2.

Witnesses. l Inventor? JAMES ROD/E, A,

@Wmwlg nrney.

To all whom, it may concern/ llnrrnn STATES PATENT OFFICE. l

' JAMES RODIE, OFY RONDOT, NEVV YORK.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 302,033, dated July 15, 1884.

Application lcd March 1, 1982. l No model.)

Be it known that I, J AMES RoDIE, of Rondout, in the county of Ulster and State of New York,.have invented certain new and useful Improvements in Steam-Boilers, of which the following is a specification.

My invention relates yto improvements in upright tubular steamboilers; and the obj ects of my improvements are, iirst, to` adapt the boiler to contain a', fuel-magazine wherefrom fresh fuel will be continuously and automatically fed to the lire as fast as it is required by reason of the wastage therein; second, to afford proper facilities for utilizing more perfectly the heated-products of combustion of the fuel; and,third, to provide a direct-draft opening for the escape of the draft-currents while the fire is being kindled or started up from a sluggish condition. These objects I attain by means of the construction shown in the accompanying drawings, which form part of this specification, and lin which- Figure lis a vertical section at the line .fr :c on Fig. 3 of a boiler containing my improvements; Fig. 2, a vertical section of the same at the line yy on Fig. 3; and Fig. 3, a plan view of the same with the top of the smokebonnet removed. y

As illustrated in the drawings, A indicates the cylindrical shell of the boiler, which may be made of any required diameter and height;

B, the fire-box, arranged eccentrically in respect to the shell of the boiler for the purpose of arranging the draft-tubes in the manner hereinafter set forth; C, the magazine or feeder for containing the supply of fuel. Said magazine is placed centrally over the fire-box B and, extending upwardly through the boiler, has an exterior opening throughk the top of the smoke-bonnet, through which the supply of fuel is'emptied into the said magazine. C is a pendent ring, of cast-iron, iire-brick, or other suitable material, fixed at the lower end of the magazine C, and. forming a downward extension of the latter into the fire-box B; D, the lire bed or grate; E, the ash-pit; F, the lower smoke-connection; G, the smoke-bonnet fixed at the top of the boiler, and' provided with a partition, g,-having a direct-draft opening, g', formed therein. Said direct-draft' opening is furnished with a damper, g2, whereby the said opening may be closed when occasion requires.

upcast-tubes connecting the smoke-connection F with the rear compartment of the ,smokebonnet G, and K the escape smoke-pipe.

It will be seen that by my improvement I utilize in steam-boilers the self-feeding and base-burning principle hitherto u sed in stoves and heaters, and the operation of it is as follows: In starting the fire in the fire-box B the damper g2 should be moved so as to uncover the opening g', and thereby permit the draftcurrents that rise from the lire-box B through the upcast-tubes H to pass directly vout of the boiler through the escape-pipe K. When the rev becomes well kindled, the magazine G should be charged with coal, and when the latter is in a sufficiently active stateof combustion the direct-draft opening g should be closed by its damper g". Then the draft-currents, as indicated by the arrows in Figs. 1 and 2, will pass from the'ire-box B upwardly through the upcast-tubesH into thefront compartment of the smoke-bonnet G, from thence downwardly through the downcast-tubes I into the lower smoke-connectiomF, and, passing through the upward through the upcast-tubes J into the rear compartment of the smoke bonnet G, from whence the said'currents escape through the pipe K. By means of the pendent ring C the-surfaceof the incandescent fuel is kept at latter, they (the draft-currents) are reverted 4 a sufficient distance below the lower ends of this progressive increase in the areas I not only secure a greater amount of heating-survface for absorbing the heat from the escaping `heated products of combustion, but I also intensify the strength of the draft currents through the boiler.

IOO

as herein described, of the downeast-tubes I and the separate series of upeast-tubes II J, all of said tubes being contained inside of the shell A, and the several series of said tubes being)r arranged in relation to each other and to the fire-box B, smoke-chamber F, and smokebonnet G, having separating-damper between 2C the downeast-tnbes, as herein set forth.

J AMES RODIE.

wWitnesses:

JNO. B. ALLIGER, H. M. CRANE. 

